anatomical Structure of the IP omhat . 309 
the body, and examined more particularly. On opening the 
vagina, it was found to terminate at the common neck of the 
uteri, on each side of which were the openings of the lateral 
canals, and in the middle between them the meatus urinarius, 
with a slender fleshy pedicle on each side of it. Behind the 
meatus urinarius were two orifices leading to the two uteri, 
but they were filled with a thick gelatinous substance which 
rendered them completely impervious. 
“ I made a longitudinal incision into the largest of the uteri, 
and found its coats lined with the same jelly met with in its 
os tineas. Continuing the incision through this jelly, and at the 
same time using gentle pressure, there issued a quantity of a 
thin pellucid fluid, accompanied by an embryo wrapped up 
in very fine membranes, which contained some of the same 
transparent fluid. The membranes did not appear to be at 
all connected by vessels either to the uterus or gelatinous 
matter. I had no doubt of the other uterus containing a simi- 
lar embryo in a less advanced state. 
“ Each uterus had evidently only one Fallopian tube and one 
ovarium ; this tube had no swell or enlargement where it joins 
the uterus, as in the kanguroo. In both ovaria were appear- 
ances like corpora lutea, but that of the right side was most 
distinct. The lateral canals opened into the uteri just where 
the neck terminated in the cavity. I have omitted to note 
how far these canals were pervious.” 
This account of Mr. Bell’s, which differs so materially from 
that of the female organs of the kanguroo, corresponds ex- 
actly with that of the American opossum, only the parts are 
upon a larger scale ; and it is found that the male organs 
of the wombat and koala are also similar to those of the 
